煮沸了的牛奶发出一股可怕的燃烧气味。

The milk boiled over and there was a horrible smell of burning.

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空气中弥漫着橡胶燃烧的气味。

The smell of burning rubber filled the air.

《牛津词典》

橡胶燃烧的气味不好闻。

The smell of burning rubber is not pleasant.

《新英汉大辞典》

它有一种令人不快的气味，而且燃烧时多烟。

It had an obnoxious smell and burnt with a smoky.

youdao

这种物质燃烧时发出一股难闻的气味。

When this material burns, it flings off a nasty smell.

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这种材料燃烧时发出一种难闻的气味。

When this material burns, it flings off a nasty smell.

youdao

这种材料燃烧时发出一种难闻的气味。

When this material burns, it flings off a nasty smell.

youdao